High-density assembly of micro-dispersoids by laser-induced bubble and fluid flow

Yasuyuki Yamamoto; Shiho Tokonami; Takuya Iida

doi:10.1117/12.2319385

24 April 2018 High-density assembly of micro-dispersoids by laser-induced bubble and fluid flow

Yasuyuki Yamamoto, Shiho Tokonami, Takuya Iida

Proceedings Volume 10712, Optical Manipulation Conference; 107120X (2018) https://doi.org/10.1117/12.2319385
Event: SPIE Structured Light, 2018, Yokohama, Japan

Abstract

A laser-induced micro-bubble and fluid flow can assemble dispersoids locally and rapidly by CW laser illumination to light absorptive materials in a suspension. However, the control method of such a process hasn’t been well established. In this study, we tried to construct a quantitative analysis method based on the projection area of the assembled dispersoids and to clarify the factors for the control of the laser-induced assembly. As a result, it was clarified that adsorption of the amphiphile onto gas-liquid interface of the bubble/suspension plays an important role for the controllability. Particularly, we found that there is a high correlation between the projection area of the assembled dispersoids and its concentration under the controlled assembly. These findings are crucial not only for the control of the laser-induced assembly but also for the rapid concentration measurement techniques.

Citation Download Citation

Yasuyuki Yamamoto, Shiho Tokonami, and Takuya Iida "High-density assembly of micro-dispersoids by laser-induced bubble and fluid flow", Proc. SPIE 10712, Optical Manipulation Conference, 107120X (24 April 2018); https://doi.org/10.1117/12.2319385

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